Temperature
This is the average kinetic energy of the molecules of a substance.
Temperature
This is a balanced state at which a system is stable.
Equilibrium
This is the total kinetic energy of all the molecules that make up a sample.
Thermal energy
When energy moves from one object to another, it is called an energy this.
This is a group of atoms that are joined together in a particular way.
Molecule
This is a number that summarizes a set of data and can be computed by adding all the numbers in a list and dividing by the number of numbers in the list.
Average
If two objects at different temperatures come into contact with one another, energy always flows from this to this.
Warmer to cooler
To calculate the thermal energy of a substance you have to add all the kinetic energy of these.
All the molecules in the substance.
When a substance gets colder, this is where its thermal energy goes.
It transfers out to other molecules
Because molecules are constantly in motion, they are said to have this.
Kinetic energy
If an object is cooler than another, then this is how its average kinetic energy compares to the other object.
It's lower
Energy transfer will continue between two objects at different temperatures until this is true about their temperatures.
They are equal
Two differently-sized samples of the same substance at the same temperature must have a different this.
Thermal energy
In the school heating systems we investigated, energy transferred from hot water to this.
The air in the school
A collision between molecules is the moment two molecules do this.
Hit each other
This is the lowest possible temperature in the universe.
Absolute zero
This is the equilibrium temperature between a 100 mL cup of water at 100 degrees Celsius and a 100 mL cup of water at 0 degrees Celsius.
50 degrees Celsius
If a cooler sample has a higher thermal energy than a warmer sample of the same substance, this must be true about their numbers of molecules.
The cooler sample has more molecules
When thermal energy transfers between two objects that are in contact with one another, it is this type of energy transfer.
Conduction
These are the subatomic particles in the nucleus of an atom.
Protons and neutrons
This is Earth's average surface temperature.
15 degrees Celsius
This is the equilibrium temperature between a 100 mL cup of water at 100 degrees Celsius and 100 mL of ice at 0 degrees Celsius.
10 degrees Celsius
The SI unit for energy is named after him.
James Prescott Joule
When heat transfers through space (no contact required) it is known as this type of transfer.
Radiation
This is the unit that refers to having 6.02x1023 of something, molecules for example.
A mole